Mannequin Sizing Guidelines
For the TRISVR® Surgical Ventricular Restoration Procedure
Selection of MannequinTM size is determined by multiplying body surface area by a conversion factor of 50 to 60 milliliters per square
meter.* The degree of dilatation present in the basal portion of the left ventricle pre-operatively determines the conversion factor to be used.
The following guidelines may assist the clinical team in selecting the appropriate
Mannequin size for each individual patient.
1
2
3
Determine Body Surface Area (BSA).
Assess the degree of dilatation present in the base of the left ventricle at end-diastole.
Measure above papillary muscles and below mitral valve.
Use the following guidelines to calculate Mannequin size.
If the base of the left ventricle is…
Use this conversion factor…
Non-dilated
BSA x 50 ml/m2
Moderately dilated
BSA x 55 ml/m2
Grossly dilated (tenting of mitral valve present)
BSA x 60 ml/m2
Assessing Basal Dilatation: Examples
of Non-dilated and Dilated Base
Note: If diameter of LV base at end-diastole is greater than 55 mm, use 60 ml/m2 conversion factor.
Mannequin size based on conversion factor of…
BSA
50 ml/m2
55 ml/m2
60 ml/m2
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
80 cc
80 cc
85 cc
90 cc
90 cc
100 cc
100 cc
110 cc
110 cc
120 cc
120 cc
130 cc
80 cc
90 cc
90 cc
100 cc
100 cc
110 cc
120 cc
120 cc
130 cc
130 cc
140 cc
140 cc
90 cc
100 cc
100 cc
110 cc
110 cc
120 cc
130 cc
130 cc
140 cc
140 cc
150 cc
150 cc
Non-Dilated Base
Dilated Base
* M Di Donato, A Frigiola, M Benhamouda, L Menicanti. Safety and Efficacy of Surgical Ventricular Restoration in Unstable Patients With Recent Anterior Myocardial Infarction. Circulation. 2004:110:II-169–II-173.
These formulas are intended as a guide. Selection of the proper Mannequin is the responsibility of the medical professional.
Chase Medical, 1876 Firman Drive, Richardson, Texas 75081 U.S.A. / www.chasemedical.com
Phone: (800) 787-0378 or (972) 783-0644 / Fax: (972) 235-3446 / Email: chase@chasemedical.com
Copyright  2005 Chase Medical. Mannequin is a trademark of Chase Medical. TRISVR is a registered service mark of Chase Medical.
TS-SVR 002:9/05
Quick Reference Chart